Note that in many use cases this may not actually improve performance. Run tests to verify if there are any real gains for your application usage. To enable a raw disk partition, first start MariaDB with the newraw option set on the tablespace. When the MariaDB Server starts, it initializes the partition.
Don't create or change any data, any data written to InnoDB at this stage will be lost on restart. Once the server has successful started, stop it then edit the configuration file again, changing the newraw keyword to raw. When you start MariaDB again, it'll read and write InnoDB data to the given disk partition instead of the file system. On Unix-like operating systems, you can see the file using the ls command:. Note, the MariaDB user, usually mysql , must have write permissions on the given path.
This sets a read lock on the table, allowing you to manually copy the tablespace file and the metadata file to another location. You can reclaim disk space when truncating or dropping a table. For tables created when file-per-table mode is turned off, truncating or dropping them creates free space internally in the ibdata files. That free space can only be used for new InnoDB data. The InnoDB tablespace. By default, the InnoDB engine shares files for multiple tables. The tablespace is used by multiple tables.
That is, files for storing table contents are shared among tables. MYD and Country. MYI to store data rows and indexes respectively for the table. Prior to v5. InnoDB's file-per-table mode is a more flexible alternative, where you store each InnoDB table and its indexes in a separate file.
How to Minimize and Handle Deadlocks. Transaction Scheduling. InnoDB Startup Configuration. Configuring Multiple Buffer Pool Instances. Making the Buffer Pool Scan Resistant. Configuring Buffer Pool Flushing. Saving and Restoring the Buffer Pool State. Configuring Spin Lock Polling. Purge Configuration. Configuring Persistent Optimizer Statistics Parameters.
Configuring the Merge Threshold for Index Pages.
0コメント